Feed for stone-channeling machines.



T. D. 'owws. FEED FOR STONE CHANNELING MACHINES.

APPLICATION FILED APR- 4, I912.

Patented Feb. 8, 1916.

3 SHEETS-SHEET l.

WITNESSES THE COLUMBIA PLANOGRAPH co WASHINGTON, D. c.

T. D. MOWLDS.

FEED FOR STONE CHANNELING MACHINE S APPLICATION FILED APR. 4. 1912.

3 SHEETSSHEET Z. l

Patented Feb. 8, '1916.

WITNESSES COLUMBIA PMNOGRAPH C0,, WASHINGTON n c v T. n. Mowws. FEED FORSTONE CHANNELING MAGHlNES.

APPLICATION FILED APR.4, 1912. I

Patented Feb. 8, 1916.

a SHEETS-SHEET a.

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WWII/m in 7 IIIIIIIII'IIIIIIII Q I 49 48 IF- THE COLUMBIA PLANOGRAPH co,WASHINGTON, D. c.

' frame or tool, preferably put into operation were sirnrnfsrnrnn'r mar;

THOMAS D. MOWLDS, or BALA, P NNSYLVAN A.

FEED FOR sroNn-onANnELING. MAcHIivEs.

To all whom it may concern:

Be it known that I, THOMAS a citizen of the United States, residing atBala, in the county of Montgomery and State of Pennsylvania, haveinvented a certain new and useful Feed for ing-Machines, of which thefollowing "is, a specification. I

The purpose of my inventionis to provide a rockchanneling machine feed,preferably -.an auxiliary feed, in which theforce moving the channelingtool laterally is applied close to the rock being cut. v

A. further purpose of myinvention is 1' automaticchannelwall-engagingprovide feed at or near the bottom of a channelingby the lateral feeding of the framejor tool.

A further purpose of my invention :is-to use rolling means, preferablyWheels to support the channeling frame from the bottom wall of thechannel. v

A further purpose of my invention is to rotate a channehng tool byfriction with the channel walls.

I have preferred to embodying one form of my invention. Fig.

2 is a section of Fig. 1 taken upon the'line 'ww thereof. Fig. 3 is asection. of thestructure shown in Fig. 1 taken upon the line 410-thereof. Fig. 4 is a section of the structure shown in Fig. 1, takenupon the. thereof. Fig. 5v is a perspective line y'y view of achanneling tool used by me with means applied, cotiperating withthechannel, to effect rotation'of the toolgfFig. 6. is a broken sectionof the structure shown,

in Fig. 1, taken upon the linee z thereof. Fig. 7 is, a central verticalsection ing wheel illustrated in Fig. 1. Fig. 8 isStone-Chanelillustrate my inven-Q tion by several forms thereof which Ihave determined to be practicahefficient and-rela tively inexpensive,and which at the same; time well illustratethe principles involved.

Figure 1 is a front elevation of a machine,

of afeed- Similar numerals of reference lndicat'e'like parts in thedrawings.

My invention is applied to, a channeling.

machine of they general character shown in my Patent No. 1,012,569, of:December19,. 1911. For simplicity I have shown a cha r.-

nel-entering frameh'aving fewer channeling too-ls than are shown in mypatent. 1 Except forlthis omission and the addition of the 1Specification of Letters Patent. Patented Feb. 8, 1916. I Applicationfiled A rne e z. seriainb. 688,362. I I I special feeding and rotating:lmechanisms, F gs. land 8here1n correspond generally to Fig. 1 of saidpatent.

' Upon any suit. I suchas 1 and 2, I mount a frame 3, providing guides4:, 5..along which a frame. 6 is adapted to be fed laterally by acamuponor within cylinder. 7, shown in the form of a cam slot which engages.pin 8 upon the rear of the frame. -In theillustration the cylinder ismounted upon and rotatedby. shaft 9, which is rotated'by sprocket wheel10 and sprocket chain 11. from any suitablesource ofpower.Theconnections which I. prefer for v this movement are those ofmy patentabove mentioned, Theirexact character isnotmaterial to, this invention.

ble cooperating supports,

' Properly guided within the frame 6, I proi videa vertically movableframe 12, which supports and. carries channel cutting -.1nen1-; 1 bers13, here shown as twoin number, each: of which may compriseabutting-tool 14 and r a short rod 15, forming a par'tthereof or rigidlyconnected therewith. The frame 12 forms a carrier for the tool-carryingrods and the toolsthemselves. Within a recess 16, generally alined withthe guide fof each ofthese cutting'memberawith this construction, Iprefer to place a spring '17 engaging i atone end with. the frame and atthe other with a collar 18 upon too-l rod 15. This constructionis usedtolift the tool slightly; from the bottom of thechannelbetween sue-icessive impact blows.

me in a' co-pending application, Serial Numf p This subject matter isnot claimed here because it'is claimed byher 554,687, filed-April 11,1910, issued May.

27, 1913, as Patent N0.,1,062,790. I

In the form shown in Fig. l, (the form making use of the short tool rod)I have intended but slight movement of the cutting members and havetherefore disconnected them at 19 from the means for delivering theblow, here shown as a plunger 20. As in the case of my patent abovementioned, this plunger is driven downwardly by the re-action of aspring 21, compressed by the lifting action of lugs 22 upon a collar 23.The lugs are operated by rotation of the member 24 through shaft 25,sprocket 26 and chain 27. I prefer to supply the movement to this chainby the means shown in my patent above mentioned and have, therefore, notconsidered it necessary to illustrate this means here. The frame 12 isshown as capable of being lifted by the wheel 28 through gearing 29, 30,31 and 32, engaging a rack 33 upon the back of the frame 12.

The weight of the frame tends to feed it downwardly. I have shown wheels34, connected with the frame 12, which rest against the bottom of thechannel and support the weight of the frame. The reduced frictionobtained by the rolling engagement of the wheels 34 with the bottom ofthe channel. facilitates the lateral movement of the frame 6. V

In existing channeling tools and machines, the movement of the tool haslagged somewhat behind the feed of the frame or carrier supporting thetool outside or above the cut. This tendency has been due chiefly to theresistance of the stone to cutting by the tool, particularly as the endof the channel is approached, with the result that the tool tends tospring away from the out toward the portion of the channel justtransversed, or, as it is termed,

refuse the cut. This takes up the lost motion in the intermediatemechanism and causes a lag corresponding to this lost motion. Thelagging is increased through the spring of the tool and shank or rod.With many channeling machines the lagging of the tool permitted by thespring of the tool rod is very great because of the length ofunsupported. drill rod presented.

Lost motion and spring have been greatly reduced in the machines of myPatent No. 1,012,559. Lost motion within the guides is still to beconsidered, since these guides cannot be fully tightened without undueinterference with the feed. The lateral eX- tent of the frame 12 cannotbe increased much. Other means of reducing or eliminating the lag must,therefore, be supplied. I have provided feeding means within the channelfor this purpose. It operates at ormachines of the character shown in mypatent aforesaid, it will obviously be capable of application to anychanneling mechanisms in which a cutter frame, or tool support.extends'down into the channel.

Various mechanisms for drawing or feeding the lower part of the frame orcutting tool along the channel applied within the channel, will occur tothe skilled mechanic. with the disclosure indicated above and containedherein. I have preferred to illustrate but two of these many forms here.These are selected with a view to showing engage ment' with the bottomwall of the channel and engagement with the side or sides of the channelrespectively.

In the form shown in Fig. 1, I have supported the weight of the frame 12upon rotatable feed wheels 34 secured in extensions formed on the bottomof said frame and I have, preferably serrated or notched them as at 35,in order that they may prick their way through the refuse in the bottomof the channel to the solid bottom. I prefer two disk-like wheels havinga common axis, at each intended point of support, of general spool form,and shall consider the number as two hereafter for convenience. I rotatethe wheels 34 at such a speed that their peripheral speedy shall equalor slightly exceed the lateral feed of the frame 6. Where they merelyequal the lateral feed of the frame v6, any slip of the wheels 34 wouldresult incorresponding lag and impose additional duty upon the frame (3in dragging the wheels along the channel. Where desirable, the wheelsare given a slightly greater peripheral speed than the frame, so thatany lag of the frame, due to interference with its feeding function,will be corrected by the accelerated feed of the wheels. The peripheriesof the wheels should be suitably tempered, so as to reduce wear. I haveprovided for the positive rotation of the wheels 34 by making them ingeneral spool form, and driving them conveniently through a sprocket 36,between the two sides 37, chain 38 and sprocket 39. The sprocket 39 isshown as connected by shaft 40 with a gear 41 engaging the teeth of arack 42 upon any suitable member 43 of the head 44, which is movablevertically in agreement with the movement of the frame 12 and issupported in guides 45 with in frame members 3. Other connection with amember parallel to the length of the channel, whether rigid or flexible,and at any preferred height could evidently be made in a great varietyof forms. It will thus be seen that horizontal movement of the frame 12will, with the particular illustration selected, result in rotation ofthe gear 41 with corresponding rotation of both sprocket wheels conne teby the sprocket 7 chain, turning the wheels 34. The rate of peripheralspeed of these wheels will obviously depend upon the relation betweentheir effective diameter-determined by the depth to which they sink intothe bottom of the channel-and the pitch diameter of the wheel 41.

Various connected mechanisms, effecting, for example, the verticalmovement of the rods 20, guiding of the frame 12, the 0on tinua-nce ofthe connection between the driving mechanism and the heads 23, and thelateral feed, are fully explained in my Patent 1,012,569. They are nothere elaborated because they are already matters of public knowledge,through my patent, and

the detail of their construction does not enter into the combinationsintended to be,

claimed herein.

In the form shown in Figs. 8, 9 and 10, I serrate the peripheries ofwheels 34, as in the other form, for the purpose of having them digtheir way down to the bottom of the channel to keep the cutting membersuniformly at the proper depth, but do not,

as in the other form, use them for positive lateral feeding purposes.They cooperate with the feeding mechanism in'that the rolling supportthus provided is effective in reducing friction and through obstructionsat the channel, I proyide one or more friction wheels 46, which I preferto taper as at 47 in order that they may guide their own way into thechannel. I prefer to rou'ghen these,

as at 48, for feeding engagement with the side of the channel. I supportthem in any suitable bearings, pref erably giving them a slight yieldingmovement at the lower end, sidew-ise of the channel, as by springs 49,to press them against the channel wall.

hey then not only yieldingly engage the wall to feed along the channelbut also follow up breaks ofthe stone and other irregularities in theside wall of the channel and at all times bite into the side wall. Thesewheels 46n1ust be less in greatest diameter than the width of thechannel cut,

suitable point I provide gear 52, engaging with rack 42-, preferablyupon the side of the head 44, since this location requ1res nointermedlate gearing. The rlgid connection shown here also offers someadvantage overrolling over orthe bottom of the out. In this form, atsuitable points along the feeding engagement iswith a wall of theichannel in each case, whether it bev .a bottom or side wall thereof, andthat it. in

each case isautomatic both in its operation.

and in its reversal.

In Fig- 5, I have illustrated means for rotating the cutting tool, whichis put in operation automatically by engagement with a relatively fixedside member, preferably friction with the side wall of the channel.This, also, is automatic in its feeding and in its operation whencutting in either direction. While I much prefer to, apply thisautomatic turning to a tool having but slight vertical movement, beingliftedlittle or none between impact blows, as illustrated in myco-pending application, Serial No. 554,687, filed April 11, 1910, someof the advantage of my invention would be attained by connection of thistool-rotating mechanism with a full length plunger and connected tool,such as is shown in my Patent 1,012,569. In either case I prefer tospline the feeding wheel 58 upon the tool.

carryingrod, as shown at 54, 55, so that V the feeding wheel 53 mayremain in bodily fixed relation to the frame 12'or 12" and the toolcarrying rod mayv slide within it for the intended movement or anyslight accidental movement. In whichever form of my inventionpIprefernot to rest the wheelv53 intoo close proximity to the cut'- tingedge, because it may slightly interfere with the cutting operation,reducing the advantage of my invention; and for that reason I prefer tosupport this wheel above a tool rod bearing, as within the frame 12 or12, which goes down into the channel.

' In either form, therefore, I prefer to mount the wheel 53 within arecess 56 in the frame, so as to prevent vertical movement with respect.to the frame. I make the greatest diameter of the wheel nearly equal tothe effective width of the channel cut so that, while there will be nofriction under ordinary circumstances, slight vibration of the rod orframe will bring the points 57 of the wheel into engagement with eitherside of the channel, though only one side at a time.

The'teeth of the wheel are shown as of ratchet construction, as at58,111 011161 that they may slip along the one side of the vchannelv whileengaging the opposite side during the lateral feeding of the frame alongthe length of the channel. It will be noted that the ratchet effect isreversed with reversal of the direction of feed of the framelengthwiseof the channel, so that the rotation takes place a in the Ksame direction at all times. Notwithstanding that the ratchetformationof the teeth will resuit in greater rotating tendency in one constantdirection, whichever the direction of frame feed along the channel, Iprefer to prevent reverse turning by a drag operating against a disk orcollar of any suitable character upon the same rod. This collar maycorrespond with the I collar 18. The drag'60 is preferably slight, bymeans of a spring engaging any character of roughened surface.

It will be evident that my feeding invention is broadly applicable tothe feeding of a channeling holder by means close to the tool and whichmay or may not engage with a wall ofthe channel, whether it be a side ora bottom wall.

It will be evident that any form of device extending parallel With thelength of the channel, might be engaged by the parts to cause therotation desired, Whether of the wheels 34, or 4:6, or of the tool. Iprefer a rigid cross bar and rack for the horizontal member to any formof flexible construction as the movement may be made more nearlypositive.

I prefer making the feed of the tool from within the channel automatic,through reaction due to the movement of the frame to any independentapplication of force for the rotation of the feeding Wheels, supports,or members, as the construction is simplified and registration. of thefeeding impulse with that given outside the cut (in auxiliary use of myfeed) can more easily be insured in the automatic form than when aseparate motive power is used.

It will be evident that my invention affords practical, positive andeffective means for auxiliary feed of a channeling frame or tool supportalong the channel itself Which is automatic in its operation and,preferably, reversible.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is 1. In a device of the character stated, achanneling tool frame, a rotatable channeling-fr-ame-support, adapted toengage the bottom of the channel, a channeling tool, and means forrotating the support, put in action by movement of the channeling toolframe along the length of the channel. 1

2. In a device of the character stated, a channeling frame adapted toenter the channel, a rotatable frame support, engaging the bottom of thechannel, and automatic means, set in operation by the moving of theframe along the length of the channel, for

rotating the support.

3. In a device of the character stated, a channeling frame, a toolcarried by the frame, a rotary feed wheel entering the channel andengaging a'wall of the channel, and means outside of the channel forrotating the Wheel.

4. In a device of the character stated, a channeling frame, a channelingtool carried thereby, a combined frame support and feeding Wheelentering the channel, and means for turning the Wheel to feed the toolcarrying frame.

5. In a device of the character stated, a channeling frame, a rotatablemember extended down into the channel, tool feeding means Within thechannel turned thereby and adapted to engage with a channel wall, amember parallel with the length of the channel in operative relation tothe frame and connections between the parallel me1n ber and rotatablemember for causing rotation of the rotatable member by the movement ofthe rotatable member along the length of the ,channel.

6. In a device of the character stated, a channeling frame, a toolcarried thereby and entering the channel and rotary means engaging aside of the channel to rotate the tool when the frame is fed along thechannel length.

7. In a device of the character stated, a channeling frame, a channelingtool therein, a tool .rod for the tool, a wheel mounted upon the toolrod, adapted to engage a side channel Wall and rotate the rod, and meansfor preventing reverse rotation of the rod.

8. In a device of the character stated, a laterally movable channelingframe, a vertically movable frame guided therein, a channeling tooloperating in the vertically movable frame; and a rotatable support forthe vertically movable frame having an edge adapted to displace therefuse lying on the bottom of the channel and rest on the solid stone.

9. In a device of the character stated, a laterally movable channelingframe, a vertically movable frame guided therein, a channeling tooloperating in the vertically movable frame, a rotatable support for thevertically movable frame adapted to rest on the solid stone at thebottom of the cut and projections upon the portion of the support engaging the stone adapted to displace the refuse lying on the bottom ofthe channel.

10. In a device of the character stated, a laterally movable channelingframe, a vertically movable frame guided therein, a channeling tooloperating in the vertically movable frame. a rotatable support for thevertically movable frame adapted to rest on the solid stone at thebottom of the cut and havinglaterally spaced edges adapted to displacethe refuse lying on the bottom of the channel.

11. In a device of the character stated, a channeling frame, a laterallymovable chan- 1,17o,9se v 5 neling tool and rod supported thereby,rotary frictional sidewall-engaging means connected With the rod tocause rotation of the same with lateral movement of the rod and meansfor relatively increasing the fric- ;o channeling frame, a laterallymovable recip- Irocating channeling tool and rod supported thereby and aratchet Wheel upon the rod engaging with a side Wall of the channel toIturnthe rod in one direction With lateral movement of the rod along thelength of the 15 channel.

V THOMAS D. MOVVLDS; Witnesses:

HELEN I. KAUFFMAN, GERTRUDE BADER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. 03"

